Feed-mill



J. R. DAVIES FEED MILL.

Patentd June 28, 1887.

(No Model.)

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(No Model.) V .2 Sheets-Sheet 2 J. R. DAVIES.

FEED MILL.

7 No. 365,583. Patnted June 28, 1887.

UNITED, STATES PATENT OFFICE.

JOHN R. DAVIES, OF CHICAGO, ILLINOIS.

FEED-MILL.

SPECIFICATION forming part of Letters Patent No. 365,583, dated June 28, 1887.

7 Application filed March 16,1886. Serial No. 195.402. (No model) To all whom it may concern:

Be it known that I, JOHN R. DAVIES, of Chicago, in the county of Cook, and in the State of Illinois, have inventedcertain new and useful Improvements in Feed-Mills; and I do hereby declare thatthe following isafull, clear, and exact description thereof.

My invention relates to a feed-mill; and it consists in certain peculiarities of construction and combinations of parts, as will be fully described hereinafter and subsequently claimed.

Figure 1 of the drawings represents an elevation of my invention, partly in vertical section; Fig. 2, a top plan view of the same, a portion only of the cone and grinding-teeth being illustrated therein; Fig. 3, a detail View and on the upper edge of this box rest lugs (1,

extending out from the stationary cone B, these 1 lugs being provided with depending perforated studs a, through which and the walls of said box are passed bolts b, to retain the respective parts in their relative positions. The stationary cone B is oft'setted at b, to receive an inwardly-projecting flange,-c, on a grinding-ring, C, that is secured to said cone by bolts c,passed through the latter and the flange of the former, so that when these bolts are tightened the ring is drawn down upon the cone without kinking, as is generally the case in the ordinary manner of uniting said parts by bolting through the center of the ring. The center of the stationary coneB is formed with a depending hub, (I, provided upon its interior with screwthreads designed to engage corresponding threads upon a central shaft, D. The lower face, 0, of the cone-hub d is provided with clutch-teeth to engage a clutch-faced ring, f, that forms the inner terminus of a curved lever, E, said ring fitting around the central shaft, D, this engagement acting as a means to prevent said shaft from revolving when the mill is in operation;

Adapted to fit upon the central shaft, D,

below the ring f of the lever E, is the hub g of a suitable spider, the arms F of said spider being provided at their outer ends with bearings h for the journals G of pinions G, said bearings being vertically extended in an up ward direction. The pinions G mesh with an annular rack, i, formed upon the lower under face of an outer'shell, H, said shell being offsetted upon its interior to receive a grindingring, I, retained in position by bolts k. The respective grinding-rings O I have the corrugations or dress of their exposed faces graduated from top to bottom, so as to gradually reduce the substance coming in contact therewith.

To prevent the shell H from rocking on the pinions G, I secure in the vertically-extended outer ends of the spider-arms F suitable journals, m, designed to carry anti-friction rollers K, and these rollers come immediately above the pinions and bear upon the upper surface of the outer rim of said shell, to retain the latter at all times in operative position with relation to the pinions.

Immediately below the hub g of the spider I secure a collar, L, by means of a cotter, 42, passed through this collar and the central shaft, D, thus forming a firm central bearing for said spider. Though this construction of the central support may be variously modified to ac complish the same result, that already described is deemed sutlicient for all practical purposes.

Extending inwardly from the upper rim of the outer shell, H, are a series of arms, M, terminating in a hub, 0, adapted to fit loosely upon the central shaft, D, and said arms are provided with depending teeth 19, arranged with relation to teeth q, projecting up from the stationary cone B. The central shaft,.D, is cut away at its upper extremity to form a seat, '1, for the flange s of a hub,N, designed to fit around said shaft and bear upon the hub 0, forming the inner terminus of the arms M. The outer shell, H, ofwhich said arms are integral parts, is entirely supported by the spiderarms F through the medium of the pinions G. That portion of the shaftDinlmediately above the seat r is squared off upon its sides,and the bore of the hub N correspondingly formed, in order that the parts when united will .be rigidly connected'. Radiating from the hub N are a series of toothed arms, 0, forming what I term the crusher. The depending teeth t of the crusher-arms are arranged with relation to teeth a, projecting up from the arms M of the outer shell, Hysaid crusherarms being preferably one more or less than those belonging to the shell. Thehub N ofthe crusher-arms O is held down in operative position by means of a nut, e, or other suitable means,and said hub is provided with a port, 10, through which oil is introduced to lubricate the central shaft, D, and its several connections. c

P is a hopper suitably secured to the outer or revolving shell, H, so as toincase the crushing devices above described. The hub N ofthe arms 0 is also formed witharadial handle, It, that is operated when it is desired to revolve the central shaft, D, to vary the space between the grinding-rings O I, as will be hereinafter more fully described, the normal condition of said shaft being stationary. If desired, I may also provide the hub N with a radial bracket, S, upon which to secure a corn-sheller, T, or grain-cracker, such a device being partially shown in Fig. 1, and the bracket forms a bear ing fora vertical shaft, U, carrying atits upper extremity a bevel-pinion, :10, adapted to mesh with a gear, 51 on the main shaft ofsaid sheller. The main shaft of the sheller has fast thereon a rough-faced horizontal roller,betwcen which and asimilar-faeed bedplatc the ears of corn are fed to have the kernels removed,said sheller being ordinarily provided with asuitable casing that has a delivery-chute for the cobs; but for convenience'ofillustration this casing has been omitted.

To thelower extremity of the vertical shaft U, Isecure a horizontal pinion, designed to mesh with cog-teeth d on the upper outer portion of the shell H, this construction and arrangement of parts serving to drive the cornsheller as said part H is revolved, so as to shell and reduce the corn to meal at one operation. Ordinarily the outer shell,H, is provided with a lateral tongue, H, to whichI attach a sweep, H", and to the latter-I hitch a horse or team to furnish the motive power for my mill. Any one or all the journals G of the pinions G may be laterally extended, so as to be operatively connected by suitable couplings and shafting or other gear to a saw-mill, root-cutter, or other machine generally employed about a farm, and in such an instance the mill becomes a horse-power.

As various machines about a farm cannot be effectively run at the same rate of speed, I provide what I term a jack, adapted to be connected bya tumbling-rod and shafting, A, with one of the laterally-extended pinionjournals G, and constructed to give a variety of speed adapted to different machines. This jack consists of a rectangular frame, 0', cast in onepieee and constructed with a series of chilled bearings,dfladapted to receivehorizontal shafts D D D The shaft D receives motion from the mill or horse-power through the tumbling-rod and shaft connection A, and a spunwheel, E, keyed to said shaft, meshes with a pinion, c, on the shaft I)", this latter shaft also carrying a spur-wheel, E, des gned to mesh with a pinion, c", on the shaft Dfland this relative connection of spur-wheels and pinions may be multiplied. A band-pulley may be attached to any of the shafts 1n the series and changed from one to another as oocasion may require, though, if desired, each shaft may be provided with such a pulley, so as to have a series of pulleys varying in size. Instead of driving the mill by attaching a horse or team thereto, as above described, I may connect one of the pinion -journals G with any suitable separate power to accomplish the same result.

To vary the space between the grindingrings 0 I, the lever E is shifted to regulate the engagement of the clutch-faces on the ring f and those on the hub 12, and then by operating the handle R, radiating from the hub N, that is seated on the cut-away portion of the central shaft, D, the latter is rotated in the hub d of the stationary cone B, and is thus caused to travel up or down, asnthc case may require, the spider-bearing on the collar L being carried therewith in the same direction. The spider, being carried as above described, will in turn carry the outer or revolving shell, and this part having a bearing with relation to the hub N of the crusher, the latter is raised or lowered accordingly as the adjustment of the grinding-rings may be effected for coarse or fine grinding. After the mill has been adjusted as above described I operate the lever E to lock the cl etch-faces on the parts df, and to prevent the lever from being disengaged from its locked position by strain or other causes I stop the same with a stop, I, adjustable on a rod, K, that is secured at its ends to the sides of the receiving-box A, and in order to retain the stop in the position to which it may be adjusted I provide the same with a bindingscrew, f, this construction being illustrated in Figs. 2 and 6.

In the operation of my mill corn on the cob is thrown into the hopper, and is first crushed between the toothed arms 0 M into small pieces, and coming in contact with the teeth upon the under sides of said arms M and those on the stationary cone B, it is further crushed and feeds down between the grindingrings 0 I, and by their action is reduced to the desired fineness and falls into the receivingbox A.

By the construction above described I provide a feed-mill in which the main strain comes upon a central shaft, thereby reducing the friction upon the operative parts to a minimum, and at the same time permitting a ready adjustment of the grinding-rings to vary the grade of the ground substance. It will also be noticed that the strain caused by the expansive force of the substance to be ground will come equally on the collar L and hub N,

utilized as a horse-power.

365,583 a i a in a line with the vertical center of the machine, thereby preventing any clogging of the parts by unequal pressure.

Not only is my device simple and complete as a feed-mill, but at the same time it can be Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with a stationary cone provided with a grinding-ring and having an internally-screw-threaded hub, and a .revolving shell provided with a grindingring in op position to the one on the cone, of a central shaft provided with screw-threads arranged to engage those of the cone-hub, a spiderframe fitted upon the shaft to support the revolving shell, and a hub seated upon the upper end of said shaft and provided with a radial handle, substantially as and for the purpose set forth.

2. The combination, with a stationarycone provided with a grinding-ring and having an internally-screw-threaded hub, a revolving shell provided with a grinding ring in opposition to the one on the cone, and a central hubhaving a series of toothed arms radiated therefrom, of a central shaft provided with screw-threads arranged to engage those of the cone-hub, a spider-frame fitted upon the shaft to support the revolving shell, and a hub seated on-the upper end of said shaft and provided with a radial handle and radiating arms, the latter having depending teeth, substantially as and for the purpose set forth.

3. The combination of a stationary cone provided with a grinding-ring and having an internally-screw-threaded hub, a revolving shell provided with a grindingring in opposition to the one on the cone, a central shaft provided with screw-threads arranged to engage those of the cone-hub, and a spider-frame fitted upon the shaft to support the shell,'with a hub seated upon theupper end of said shaft and provided with a radial handle and an oilport, substantially as and for. the purpose set forth.

a central shaft, a clutchfaced ring having a lever-extension and arranged to engage said hub, a spider-frame fitted upon the shaft to support the revolving shell, and means for vertically adjusting said shaft, substantially as and for the. purpose set forth.

5. The combination, with a stationary cone provided with a grinding-ring and having an internally-screwthreaded hub that is clutchfaced on its lower end, and a revolving shell provided with a grinding-ring in opposition to the one on the cone, of a central'shaft having screw-threads arranged to engage those of the cone-hub, a clutch-faced ringarranged to engage said hub and provided with a leverextension, a spider-frame fitted upon the shaft to support the revolving shell, means for rotating the latter, and an adjustable stop for the lever, substantially as and for the purpose set forth.

6. The combination ofa stationary grindingconc having an internally-screwthreaded hub that is clutch-faced on its lower end, and a revolving grinding-shell in opposition to said cone,with a central shaft having screw-th reads arranged to engage those of the cone-hub, a

clutch-faced ring having a lever-extension and arranged to engage said hub, a spider-frame fitted upon the shaft to support the revolving shell, a rod secured to a receiving-box on 'which the stationary cone is mounted, and a stop adjustable on said rod to lock the lever,

the revolving shell, and means, substantially as described, for vertically adj ustiug said shaft, as set forth. I

In testimony that I claim the foregoing I have hereunto set my hand, at Ghicago,in the county of Cook and State of Illinois, in the presence of two witnesses.

JOHN R. DAVIES.

WVitnesses:

NELLIE K. BROWN, S. S. STOUT. 

